Intensifier for hot-water heating systems.



W. C. MCKEOWN.

INT'ENSIFIEH FOR HUT WATER HEATING SYSTEMS.

APPLICATION FILED IAN.2, 1,9I3.

1,139, l 30, Patent-ed May 11, 1915. 4

THE NORRIS PETERS 60 PHUTCLLITHO.. WASHINGTON, D, c,

WILLIAM C. MGKEOWN, OF BUFFALO, NEW YORK.

INTENSIFIER FOR HOT-WATER HEATING SYSTEMS.

Specification of Letters latent.

Patented May 11, 1915.

Application filed January 2, 1913. Serial No. 739,742.

T0 all whom t may concern Be it known that I, WILLIAM C. Mc- KnowN, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Intensifiers for Hot-Water Heating Systems, of which the following is a specification.

My invention relates to intensifiers for heating systems in which hot water is employed as the vheating medium.

The object of my invention is the production of a device of this kind which is simple in construction and efficacious in action.

The invention further has for its object the provision of a device which will cut-offl the expansion chamber, commonly employed in hot water heating systems, from the remainder of the system when the water reaches a certain level in the device.

Still further objects are to provide a device which will permit the escape of air from the system while the latter is being filled and also when the water is being heated, if any remains after filling; to permit the escape of the uid under excessive pressure from the-system, if for any reason the boiler over-heats the water; and Ito otherwise improve on intensifiers now in use.

To these ends the invention consists in the novel features of construction, and in the arrangement and combination of parts to be hereinafter described and particularly pointed out in the subjoined claims.

in the drawings, Figure l is a diagrammatic view of a heating system equipped with my improved intensifier, the same being shown in full lines at an elevated point in the system, which is the preferred arrangement, and in dotted lines at a low point of the system. Fig. 2 is a longitudinal section of my improved intensifier. Fig. 3 is a cross section taken on line 3 3, Fig. 2; and Fig. 4l is a cross section taken on line 4 4, Fig. 2. y y

Referring in a general way to the heating system shown in Fig. 1, the reference letter A designates a boiler by means of which the water used as a heating medium is heated. Leading from the top of the boiler is a supply pipe B which is connected by branch pipes b to radiators C. Each branch pipe b may have a valve D whereby the heat of the radiatorsmay be controlled. E is a return pipe which leads to a low point of the boiler and this pipe has branch pipes threaded to permit e connected thereto which in turn are connected. to the radiators, each branch pipe e, if desired, having a valve F by means of which the return of the Water from the radiators may be controlled.

Connected to the supply pipe B at any suitable point is a pipe Gr which leads to an expansion tank g located at the highest point of the system. The system thus far described forms no part of my invention and relates only to one common arrangement of parts constituting a hot water heating system, to which my improved intensifier is applied, as will presently appear; it being of course understood that my invention may be applied to other arrangements or systems. I preferably apply my improved intensifier H to the pipe G adjacent the expansion tank g.

The intensifier comprises a casing I, a spring-controlled ant auxiliary valve K. The casing may be of any cross-sectional formation, but is herein shown as cylindrical with an inlet i at its lower end and an outlet or return l at its side; the pipe G having sections thereof threaded into both. Between the inlet and outlet of the casing an internal annular flange L is provided which serves as a valve seat for the main valve J, and projecting inwardly from the wall of theV casing above said valve seat is a series of guide ribs M which serve to guide said valve in its movements, said guide ribs extending upwardly 4 from said valve seat.

The main valve has an axial stem N which fits for sliding movement in a thrust sleeve O provided with a stem o extending out through a. packed cap P, said cap lbeing threaded into the upper end of the bodyportion of the casing and having a threaded bore p into n which said thrust sleeve is of its adjustment vertically. l For this purpose the stem o has a kerf o1 at its outer extremity, so that the sleeve may be adjusted from the exterior, thus dispensing with the annoying and tedious operation of removing the cap when adjusting said sleeve.

Surrounding the stem N of the main valve is a coil spring a which bears with one end against said valve and with its other end against said thrust sleeve O, serving to retain said valve in closed position, the tension of said spring being governed by the adjustment of said thrust sleeve by reason of having the thrust sleeve O threaded within the main valve J and a buoyy through the intensi-lier casing and packed cap, a wide range of adjustment may be obtained' without the possibility of water leaking from the casing when only a few threads of the thrust sleeve are engaged with the threads of the cap and owing to the spring, which surrounds the valve Vste-m N, being arranged between the valve J and the end of the thrust sleeve a comparatively long spring may b e used so as to assure ka wide variation in resistance against the valve.

The main valve is not intended -to entirely close the space -o-r chamber labove ythe valve seat L from that .beneath and for this reason is provided with a central 'bore R which extends upwardly a distance into the stem N and is in .communication at all times with `the space or chamber above said valve seat through radial passages r formed in said stem. e

ln the casing `beneath the mai-n valve is the auxiliary valve K, which in the main is cylindrical in cross section and has at its upper end a tapered or conical portion 7c adapted to Vclose the .bore R of the main valve, said bore having its lower end flared to correspond with the taper of 4`the conical upper end-of lthe auxiliary valve and serves as a seat thereioin Said .auxiliary val-ve is guided in its movements by a series of guide-ribs S which project inwardly from the wall of the casing and have their upper ends spaced a distance from :the valve seat L of the casing. Said guide-ribs serve to guide the auxiliary valve i-n its. movements and also lserve as stops and supports for the same. The auxiliary valve has an outstanding annular flange T at Ythe upper end of itscylindrical portion which rests upon said guide-ribs when in normal position; it rising as soon as the water reaches a certain level in `the lspace beneath said main valve.

The following .describes the operation of the device. When filling the heating system, including the lboiler, the main valve yJ isv seated against its seat, or is in closed position, as it may be termed, and the auxiliary valve K is lowered or inopen position. This allows the ai-r to escape ermits the heating ,systemy to befilled with water Ato a point within the intensifier that will cause the auxiliary valve K to rise and close against itsf seat the vmain valve. Now upon startinga fire in the boiler A, ythe water .becomes heated and as soon as sulicient pressure "is generated in the system to overcome 'the tension of the spring N in the intensifier the main valve will open, followed by the auxiliary valve, andthe water will pass upwardly into the expansionA tank. When the fire the boiler lowers 'orv when ,Copies of this gatentrmay he obtainedffpr ve cents each, by addressing the lspring-controlled ,said inlet and said kthe vstem .of the main valve J under the'de- Sir-ed tension.,

Hav-ing thus described my invention, what I claim is,-

l. An intensifier comprising a casing having an inlet, .an outlet, two sets of longitudinal internal guide-ribs and a valve seat between said two sets of guide-ribs, a main valve -normally seated against said valve seat `and adapted toy open only at a predetermined high pressure., said main valve being guided 'in its movements by one set of said guide-ribs and having a passage therethrough, and an 'auxiliary valve guided for movementby the other. set of guide-ribs and adaptedto close said passage to cut ogfl" communication between. the spaces at opposite sides of sai-d main valve.

2. An intensifier comprising ,a casing divided into 'two parts and having a set of longitudinal' `guide-ribs in one of said parts, an inlet yn :Said last-mentioned part :and an outlet. or return in the other part, a valve between said parts having a .central bore in communication with .both parts, and a hollow valve having a tapered upper end adapted to close lsaid central bore and being guided for movement by said guide-ribs.

3. An intensifier comprising a casing having an inlet, an outlet or return, a valve seat between said inlet. and -said outlet or return and-a set oflongitudinal guide-ribs between valve seat, said guiderigbs. being spaced( from said valve seat, a springcontrolled valve normally closed against said seat and 'having a central passage in kcommunication with the spaces at opposite sides of ksaid valve seat, and a hollow valve jguided by said. guide-ribs and having a tapered upper end adapted to close said ,central passage andl an outstanding flange adapted to bear against :the ends of ,sai-d guide-ribs adjacent said valve seat.

In testimony whereof, I have affixedy my vvsignature in thepresence k,of twosubscribing witnesses.

'wi-LLiulMy MCKEOWN..

icommisioner of Patents,

Washington, D. C. 

